
cube files
Indexed Cube Lovers Archive
![]() |
cube archivesGAP filesBlogs
Forum topicsActive forum topics:New forum topics:User loginNavigation |
ArchivesAntisymmetry and the 2x2x2 CubeSubmitted by Bruce Norskog on Sat, 03/17/2007 - 22:48.Someone on the Yahoo forum asked about how to do a 2x2x2 God's algorithm calculation and mentioned the "1152-fold" symmetry for the 2x2x2. I got to looking at some of the messages in the Cube-Lovers archives that Jerry Bryan had made about B-conjugation and the 1152-fold symmetry of the 2x2x2. He found that there were 77802 equivalence classes for the 2x2x2. I have used antisymmetry to further reduce the number of equivalence classes for the 2x2x2 to 40296. The following table shows the class sizes of these equivalence classes. class size class size/24 count ---------- ------------- ----- 24 1 1 48 2 1 72 3 3 96 4 1 144 6 14 192 8 11 288 12 49 384 16 22 576 24 337 768 32 6 1152 48 3353 2304 96 36498 ----- total 40296 I then performed God's algorithm calculations (HTM and QTM) to find the number of equivalence classes at each distance from the solved 2x2x2 cube. The results are given below. Because the 2x2x2 has no centers that provide a reference for the positions of the other cubies, the number of positions of the corners for the 2x2x2 (the only cubies it has) can be considered to be 1/24 the number of positions of the corners of the 3x3x3 (3674160 instead of 88179840). So in the tables below, I use the factor-of-24 reduced numbers for simplicity. The tables further break down the positions with respect to different class sizes. » 15 comments | read more
|
Browse archivesPollwww.olympicube.com need cube lovers opinion on which cube to produce first olympic cube 6a 83% olympic cube 6b 17% Total votes: 23 Syndicate |